How to use expose in the defineComponent(Function Signature)?

[HeroMeiKong]

I have tried the following two methods, but neither of them works

// methods1
import { ref, h } from 'vue'

const Comp = defineComponent(
  (props) => {
    const count = ref(0)

    return () => {
      return h('div', count.value)
    }
  },
  {
    props: { },
    expose: {}
  }
)

// methods2
import { defineExpose, ref, h } from 'vue'

const Comp = defineComponent(
  (props) => {
    const count = ref(0)

    defineExpose({})
    return () => {
      return h('div', count.value)
    }
  },
  {
    props: { }
  }
)